sun8i_layer.c
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/*
* Copyright (C) Icenowy Zheng <icenowy@aosc.io>
*
* Based on sun4i_layer.h, which is:
* Copyright (C) 2015 Free Electrons
* Copyright (C) 2015 NextThing Co
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#include <drm/drm_atomic_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drmP.h>
#include "sun8i_layer.h"
#include "sun8i_mixer.h"
struct sun8i_plane_desc {
enum drm_plane_type type;
const uint32_t *formats;
uint32_t nformats;
};
static void sun8i_mixer_layer_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
struct sun8i_mixer *mixer = layer->mixer;
sun8i_mixer_layer_enable(mixer, layer->id, false);
}
static void sun8i_mixer_layer_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
struct sun8i_mixer *mixer = layer->mixer;
sun8i_mixer_update_layer_coord(mixer, layer->id, plane);
sun8i_mixer_update_layer_formats(mixer, layer->id, plane);
sun8i_mixer_update_layer_buffer(mixer, layer->id, plane);
sun8i_mixer_layer_enable(mixer, layer->id, true);
}
static struct drm_plane_helper_funcs sun8i_mixer_layer_helper_funcs = {
.atomic_disable = sun8i_mixer_layer_atomic_disable,
.atomic_update = sun8i_mixer_layer_atomic_update,
};
static const struct drm_plane_funcs sun8i_mixer_layer_funcs = {
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.destroy = drm_plane_cleanup,
.disable_plane = drm_atomic_helper_disable_plane,
.reset = drm_atomic_helper_plane_reset,
.update_plane = drm_atomic_helper_update_plane,
};
static const uint32_t sun8i_mixer_layer_formats[] = {
DRM_FORMAT_RGB888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_XRGB8888,
};
static const struct sun8i_plane_desc sun8i_mixer_planes[] = {
{
.type = DRM_PLANE_TYPE_PRIMARY,
.formats = sun8i_mixer_layer_formats,
.nformats = ARRAY_SIZE(sun8i_mixer_layer_formats),
},
};
static struct sun8i_layer *sun8i_layer_init_one(struct drm_device *drm,
struct sun8i_mixer *mixer,
const struct sun8i_plane_desc *plane)
{
struct sun8i_layer *layer;
int ret;
layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
if (!layer)
return ERR_PTR(-ENOMEM);
/* possible crtcs are set later */
ret = drm_universal_plane_init(drm, &layer->plane, 0,
&sun8i_mixer_layer_funcs,
plane->formats, plane->nformats,
NULL, plane->type, NULL);
if (ret) {
dev_err(drm->dev, "Couldn't initialize layer\n");
return ERR_PTR(ret);
}
drm_plane_helper_add(&layer->plane,
&sun8i_mixer_layer_helper_funcs);
layer->mixer = mixer;
return layer;
}
struct drm_plane **sun8i_layers_init(struct drm_device *drm,
struct sunxi_engine *engine)
{
struct drm_plane **planes;
struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine);
int i;
planes = devm_kcalloc(drm->dev, ARRAY_SIZE(sun8i_mixer_planes) + 1,
sizeof(*planes), GFP_KERNEL);
if (!planes)
return ERR_PTR(-ENOMEM);
for (i = 0; i < ARRAY_SIZE(sun8i_mixer_planes); i++) {
const struct sun8i_plane_desc *plane = &sun8i_mixer_planes[i];
struct sun8i_layer *layer;
layer = sun8i_layer_init_one(drm, mixer, plane);
if (IS_ERR(layer)) {
dev_err(drm->dev, "Couldn't initialize %s plane\n",
i ? "overlay" : "primary");
return ERR_CAST(layer);
};
layer->id = i;
planes[i] = &layer->plane;
};
return planes;
}